The craniofacial complex in 47,XYY males

Archives of Oral Biology
M GrönLassi Alvesalo


Eight adult, Finnish 47,XYY males were compared with population male and female controls and, in addition, three of them were compared with first-degree male relatives. Linear and angular measurements were made from standardized lateral cephalograms of patients and normal population controls from the "Kvantti" study series. In both comparisons the craniofacial dimensions in 47,XYY males were larger than those in population male and female controls. Their craniofacial proportions and plane angles were similar to those of normal men except for a larger lower facial height with posterior rotation of the mandible and a tendency to bimaxillary protrusion, a longer cranial base and a lesser cranial-base angle. Thus the supernumerary Y chromosomal gene(s) in 47,XYY males may result in larger craniofacial dimensions than in normal males, without substantial effects on dimensional ratios and plane angles. This general metric pattern is similar to that observed in relation to many adult body and head dimensions, and the dental arches and tooth crowns, of 47,XYY males. The foramen magnum in 47,XYY males was smaller in the sagittal plane than that of normal males and females.


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Apr 26, 2012·European Journal of Orthodontics·S RizellH Kjellberg
Sep 19, 2015·Journal of the Indian Society of Pedodontics and Preventive Dentistry·Lisa ScheidtMichele Baffi Diniz
Jul 29, 2008·Archives of Oral Biology·Lassi Alvesalo
Sep 24, 2004·Journal of Dental Research·Raija Lähdesmäki, Lassi Alvesalo
Apr 28, 2017·Acta Odontologica Scandinavica·Raija PentinpuroRaija Lähdesmäki

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